Locking device.



K. S NYGAARD.

LOCKING DEVICE.

APPLICATION FILED APR. 22, I9l6.

Patented June 20, 1916.

AEW

LOCKING- DEVICE.

- Specification of Letters Patent.

Application filed. April 22, 1916. Serial No. 92,986.

To all whom it may concern Be it known that I, KNUT S. NYGAARD, a citizen of the United States, residing at Mekinock, in the county of Grand Forks and State of- North Dakota, have invented certain new and useful Improvements in Looking Devices, of which the following is a specification, reference being had to the accompanying drawings.

This invention relates to certain improvements in locking devices and has relation more particularly to a device of this general character especially designed and adapted for use in connection with a gate, and it is an object of the invention to provide a novel and improved device of this general character which may be operated with convenience and facility by one hand in order to enable the driver of a vehicle to readily manipulate the device.

It is also an object of the invention to provide a novel and improved locking device which is especially adapted for use in connection with a frameless wire gate and which serves to retain the wires of the gate taut when the locking device is operatively engaged with the gate.

The invention consists in the details of construction and in the combination and an rangement of the several parts of my improved locking device whereby certain important advantages are attained and the device is rendered simpler, less expensive and otherwise more convenient and advantageous for use, all as will be hereinafter more fully set forth.

The novel features of the invention will hereinafter be definitely claimed.

In order that my invention may be the better understood, T will now proceed to describe the same with reference to the accompanying drawings, wherein- Figure 1 is a View in elevation illustrating a locking device constructed in accordance with an embodiment of my invention in applied position and maintaining a frameless wire gate in closed adjustment; Fig, 2 is an enlarged view in top plan of my locking device as herein embodied, the coacting post being shown in section; and Fig. 3 is a view in perspective of my improved locking device as herein set forth.

As disclosed in the accompanying drawings, A denotes a gate post to which my improved locking device I. is operatively engaged.

G denotes a frameless wire gate including the vertical end bar B with which the locking device D is adapted to coact, and L denotes a loop member permanently secured to the lower end portion of the post A and through which the lower part of the bar 13 is adapted to be directed when the gate G is in closed position, as is particularly illustrated in Fig. 1 of the accompanying drawings.

As herein embodied, my improved locking device D comprises, a plate 1 adapted to be extended transversely across a side face of the post A and having one extremity provided with the extension 2 adapted to overlie the rear end of the post A, while the opposite extremity of the plate 1 is provided with the outwardly directed extension 3 substantially at right angles to the plate 1.

Suitably secured to and overlying the extension 2 is a plate 4 which extends beyond the plate 1, and supported by the extended portion of the plate 4: and the extension 3 is the endwise movable rod 5 having its forward end provided with the plate or head 6 which is substantially horizontally disposed and which extends beyond opposite sides of the rod 5. The rod 5 is constantly urged forwardly by the expansible member or spring 7 encircling the rod 5 and having its one end bearing against the extended portion of the plate 4 and its opposite end bearing against the stop pin 8 directed through the rod 5 and which limits the outward movement of the rod 5 by contact with the extension 3.

Rotatably supported by the plate 4 is the shaft 9 which extends beyond the plate 1 and said shaft 9 is provided with a crank 10 with whichis operatively engaged the free extremity of the shank 11 of the looking member 12, said locking member 12 being herein disclosed as substantially semicircular in form. The shank 11 is directed through the vertically disposed slots 14: and 15 produced respectively in the extension 3 and the head or plate 6, said slots 14 and 15 being of such a length as to offer no obstruction to the endwise movement imparted to the shank 11 by the crank 10 upon rotation of the shaft 9.

As is particularly illustrated in Fig. 2, I have coacting with the opposite extremities of the shaft 9 the operating handles 16, although I do not wish to be understood as limiting myself to any particular means for Patented June 2U, 1916.

. imparting the requisiterotation to the shaft,

although it is preferred that an operating means coact with the opposite ends thereof so the requisite movement may be imparted to the shank 11, at either. side of the gate or fence. p 5 7 It will be perceived that as the crank 10 moves forwardly the locking member 12 [will be caused to, separate a sufiicient distance relative'to the head or plate 6 to per mitthe bar 13 to be engaged within the locking member 12. It will also be self-evident that the rearward movement of the crank 10 will retract the shank 11 and'in addition to moving the locking member 12 inwardly relative to the head or plate 6, will tighten or draw taut the wires \V included in the gate G. 7 I I -The extended portion of the plate 4 is provided with the rearwardly inclined resilient lip 17 which coacts with the crank 10 toprevent retrograde movement'thereof under the influence of the strain imposed upon the shank ll bythe gateG, but it'will be at once perceived that the resiliency of the lip 17 will readily permit the crank 10 to'p'ass thereover whenthe shaft 9 is rotated ,to' move the crank 101upwardly and rear- 7 wardly to eifecta locking action. 7 V

=VVhenit is desired to release the device from operative engagement with the bar ,B, the shaft 9 is "rotatedin a direction to I carry the crank 10 downwardly until the same haspassed a horizontal center where upon the strain imposed upon the shank 11 by the gate G will result in the requisite separation between" the locking member 12 and the plate 6 as to permit the bar B to be removed from operative engagement with the locking member 12. It will also be un- -derstoodfthat alocking' action may be'had iby'rotating the shaft 9'in a direction to cause the crank 10. to move downwardly and upwardly until it is past a'horizontal center whereby the strain of the gate G will maintain the crank in contact with the The free extremity of the locking member 12 is adapted to overlie an end of the head or'plateG and in order to limit the inward movement of the shank independently of said head or plate .6, I provide the shank 11, ata point in close proximity tothe locking member12, with the shoulder V 18 adapted to contact with the head or plate 6 as is particularly disclosed in Fig. 3.

It will be readily appreciated that the ,spring 7 serves to cause the head or plate 6 to be engaged with the bar B opposite to that engaged by the locking member 12, and

it will also be noted that as the shank 11 :1s moved rearwardly to tighten the wires L W, the spring 7 'will permit the head or plate 6 to yield during such operation.

' From the foregoing description, it is thought to be obvious that a locking device constructed 1n accordance with my invention is of an extremely simple and comparatively inexpensive nature and is particularly well adapted for use by reason of the convenience and facility with which it may be assembled, and it will also be obvious that my invention is susceptible of some change and modification without material departure from the principles and spirit thereof and for this reason I do not wish to be understood as limiting myself to the precise arrangement and formation of the several parts herein shown in carrying out my invention in practice.

I claim: c 1. A look of the character described including a hook member supported for re ciprocatory movement, means for operating said hook member, a plate slidably engaged with the hook member, and means for constantly forcing said plate outwardly.

2. A look of the character described including a hook member supported for reciprocatory movement, means for'operatin said hook member, a plate slidably engaged with the hook member, means for constantly forcing said plate outwardly, and means carried by the hook member coacting with the plate for limiting the outward movement of the plate.

3. A look of the character described com prising a base plate adapted to be secured to an object, a shaft carried by said base plate, a crank on said shaft, a hook member operatively carried by the crank, a lip extending from said base plate to be engaged by the crank to retain the hook member in an operative position, and means for rotating said shaft.

4'. A look of'the character described comprising a base plate adapted to be secured to an object, a shaft carried by the said base plate, a crank formed on said shaft, :1. rod connected at one end of the crank and havingits opposite end formed into a hook, a yieldable lip carried'by the base plate to be engaged by the crank to limit movement of the rod in one direction, means for rotating said shaft and plunger, and means cooperating with said hook member for the purpose setforth.

1 5. A look of the character described comprising a base plate hav ng extensions car- I ried thereby, a plunger rod extending through openings 1n said extensions, a stop member carried by said rod, an expansion spring surrounding the rod and abutting the member and one of the extensions to hold the rod normally at its outermost limit of movement, a head carried by said rod, a hook member, means for operating said hook member, said head being provided with an elongated slot, said hook member being extended through said slot,

and means carried by said hook member for abutting relation with the head to prevent movement of the head toward the hook member past a predetermined point.

6. A look of the character described com prising a base plate, extensions formed on said base plate one of said extensions being provided with an elongated slot and a polygonal shaped opening, the other of said extensions being provided With a polygonal shaped opening in alinement with a firstmentioned opening and With a lip, a shaft carried by said base plate, a crank formed on said shaft, a rod connected with said crank and extending through the elongated slot, a rod extending through said alined openings, an expansion spring acting on said rod to force the same normally to its outermost limit of movement, a head carried by said rod, said first-mentioned rod being extended through said head and formed into a hook, means to limit outward movement of the head past a predetermined point With respect to the hook and means for rotating said shaft for the purpose set forth.

In testimony whereof I hereunto aflix my signature in the presence of two witnesses.

KNUT S. NYGAARD. Witnesses:

ToLLEr S. RUE, LABS O. SLETTo.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. C." 

